Indian emissions legislation requires as of April 2010 the installation of exhaust-gas aftertreatment systems in motor vehicles in use in the National Capital Region (Delhi) and 12 mega cities, with the same restrictions being applied nationwide as likely 2014/2015. This will affect all 3- and 4-wheelers as well as trucks and buses.
3-Wheelers (BS II to BS III)
4-Wheelers < 3.5t (BS III to BS IV)
Trucks and Buses (BS III to BS IV)
(LCV and HCV > 3.5t)
The strict particulate limit for Light (LCV) and Heavy Commercial Vehicles (HCV) of 0.020 g/kWh, together with the NOX level of 3.5 g/kWh for commercial vehicles that came into force in April 2010 and will be extended nationwide likely 2014/2015 at the latest, can already be met today by two technologies.
EGR – Exhaust Gas Recirculation DPF – Diesel Particulate Filter
DOC – Diesel Oxidation Catalyst SCR – Selective Catalytic Reduction
The hot exhaust gases from the engine – which contain soot particles – pass through the DOC, enter the filter housing and pass through the sintered metal filter (SMF®). The gaseous components flow in part through the microscopic pores of the filter pockets; the soot particles are trapped on the surface and deposited in the individual filter pockets. The rest of the exhaust-gas flow exits the partial-flow filter through the overflow area.
The table and graph contain actual test bench results measured using the European Stationary Cycle (ESC) and European Transient Cycle (ETC). The measurements show that not only the limits laid down in BS IV can be met by using the HJS Partial-Flow SMF® but that the engineering target, which includes deterioration factors, is achieved.
The core of all HJS exhaust treatment systems is the sintered metal filter (SMF®), with which HJS has set new standards in the marketplace.
Thanks to their modular design, sintered metal filters (SMF®) can be used in various exhaust systems and versions for different applications.